Ordered one of these and whilst searching for reviews found this:
The biggest stumbling block was that Windows didn’t recognize the second hard drive I was trying to install. No matter which SATA port I used, it didn’t register in Windows. In fact, it seemed only the first two ports worked and if I swapped the DVD (which was using port 2) with the new hard drive, then the DVD wouldn’t appear! Half an hour of googling later I stumbled upon the answer in various user forums.
To install new SATA port components in Dell XPS desktops, you have to go into the BIOS and disable Secure Boot mode first. For full details, ggoto
To install new SATA port components in Dell XPS desktops, you have to go into the BIOS and disable Secure Boot mode first.
Couple of things worth noting, firstly there was some initial confusion as the BIOS did correctly read the new SATA components but didn’t allow Windows to register them. Secondly, you only have to turn off secure boot once, on next boot up you can turn this back on. Lastly, there was a lot of misleading stuff on the net about your motherboard being broken, even Dell support would tell you this apparently. Don’t listen, it’s just a simple config item.